What you describe is exactly what filters were created for. It's even
in the servlet spec, making it a requirement of all java servlet containers.

--David

Trumml wrote:

>I want to execute a method each time a request is performed to my jsf site.
>The implementation for this request should remain in a jar file which is
>packed into the WAR file under WEB-INF/lib directory.
>I guess there is no solution to do this with a valve, because the class
>(jar) for the valve must remain inside tomcat classpath I guess.
>Is there any other solution to invoke a method of a class inside the
>WEB-INF/lib directory each request... Additionally the method must be
>executed in the thread of the request.
>
>I deploy the WAR into JBoss 4.0.5 with tomcat 5.5
>
>


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